So we can help you better please answer the following:

1) what is your order number?

2) Does the light on the receiver blink?

3) Have you checked the antenna cable connections to make sure they are still intact and the center pin has not pushed in, i.e. not making contact with the receiver’s sma plug?

4) Where do you have the receiver mounted? please provide a picture of where you have it installed. You can email to us at support@123-cctv.com